SSL3250A Datasheet PDF - NXP Semiconductors.

General description
The SSL3250A is a photo flash LED driver designed for battery operated mobile devices such as mobile phones and PDAs. The boost converter delivers high performance and drives a single or dual, high brightness LED at up to 500 mA with over 85 % efficiency. The driver can be programmed to operate in Flash, Torch or Indicator / Video-on mode.

FEATUREs
◾ High power single, or dual, LED output driving up to 500 mA flash current
◾ Separate indicator LED output of 2.5 mA to 20 mA
◾ Output voltage of up to 9.5 V
◾ Wide input voltage range of 2.7 V to 5.5 V
◾ High efficiency, over 85 % at optimum output current
◾ Switching frequency of 1.2 MHz
◾ Flash, Torch, and Indicator mode supported
◾ Internally timed flash operation up to 820 ms
◾ I2C-bus, programmable up to 400 kHz
◾ Strobe signal to avoid I2C latency for flash
◾ Discrete enable signals for stand-alone operation
◾ Optional resistor configurable output currents
◾ Fast response to accommodate external TxMasking functionality
◾ Soft start in Torch and Flash modes to avoid battery overloading
◾ Integrated protection circuits for enhanced system reliability
   ✦ Internal time-out function
   ✦ OverTemperature Protection (OTP)
   ✦ UnderVoltage LockOut (UVLO)
   ✦ OverVoltage Protection (OVP)
   ✦ Output current protection
   ✦ Interrupt signaling to system controller
◾ Low device shut-down current, less than 1 µA
◾ SOT758-3, thermally enhanced 16 terminal HVQFN package

APPLICATIONs
◾ White LED driver for battery powered portable devices
◾ Photo flash LED driver for mobile phones and digital cameras